Arc Red is a flat GTK theme with transparent elements for GTK 3, GTK 2 and Gnome-Shell which supports GTK 3 and GTK 2 based desktop environments like Gnome, Unity, Budgie, Pantheon, XFCE, Mate, etc. Now a days most of the distro including Arc theme by default with few modification based on their distro style such as Linux Lite & Manjaro.

It supports Gnome/GTK 3.14, 3.16, 3.18 or 3.20, The GTK murrine engine has different names depending on your distro. This will support all the major distribution such as Arch Linux and based distros, Ubuntu 15.04, 15.10 & 16.04, elementary OS Freya, Gentoo, Fedora 21-24, openSUSE 13.2, Leap 42.1 and Tumbleweed & Debian 8, Testing or Unstable